Calling Thursday’s sideline incident at Madison Square Garden that led to forward Stephen Jackson’s right ankle sprain “a Mayoral mishap,” Spurs coach Gregg Popovich called on the NBA to police activity along the league’s sidelines and baselines.

“It’s maddening,” Popovich said of the incident in which Jackson lost his balance after running into a waitress during the first quarter of the Spurs-Knicks game. The waitress appeared to be taking an order from New York City mayor Michael Bloomberg.

“It’s an accident waiting to happen.”

Jackson sat out Saturday’s 109-86 home win over the 76ers, but Popovich said the injury to the 12-year veteran was not serious.

“He’s 50-50 for New Orleans,” the Spurs coach said regarding Monday’s game.